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Re: Video conversion question...

From: "Matthew J Backes" <>
Date: Thu, 6 Aug 1998 05:41:56 -0700

>I get 'borged myself...  Really small guts and CGA(15.75KHz, 640x200)
>output in the back.  Then I guess she could do everything w/NOS or ELKS.

Well, ELKS is still in the stage of booting from floppy.  Coming along
nicely, though...

True CGA uses a 6845 CRTC, which (I believe...) can generate NTSC.
Unfortunately, my only documentation provides only a rather vague pinout and
IBM i/o addresses.

In any case, if this is a laptop, it probably doesn't use a 6845...  LCD
displays are more complicated.  I have a 286 laptop (some fancy Zenith
affair with shot power supply and almost tolerable documentation) that uses
a V6355.  THAT I do have a better pinout for.

Which 286 laptop do you have?

Matthew J Backes


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